Stratos ECO Training
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Stratos ECO Training. ECM “Smart” Circulators for Heating, DHW Recirculation Systems. ECO 16 FX. ECO 16 F. ECO 16 BFX. Presentation Date – New Jan 2008. Stratos ECO Circulators. WILO Small Wet Rotor Circulators ECM “Smart” Automatically Controlled Circulators.

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Stratos eco training

Stratos ECO Training

ECM “Smart” Circulators for Heating, DHW Recirculation Systems

ECO 16 FX

ECO 16 F

ECO 16 BFX

Presentation Date – New Jan 2008

Stratos ECO Circulators


Wilo small wet rotor circulators ecm smart automatically controlled circulators

WILO Small Wet Rotor CirculatorsECM “Smart” Automatically Controlled Circulators

  • Stratos ECO Cast Iron & Bronze

  • ECM (Electronically Communicated) technology

  • Smart pump adjusts flow to system changes

  • Auto setback

  • Anti-seizing feature

  • Easy wiring quick connectors

  • Easy set-up (∆p-v in feet of head via red button)

  • Interchangeable with all competitors

  • Replaces 12 competitor’s types

  • 115 and 230 volt, models, cast iron & bronze

  • Max temp 230 deg F, min temp 60 deg F

  • Maximum pressure 145 PSI

  • Minimum pressure – see sheet

  • Maximum wattage 59, minimum wattage 5.8

  • Class “A” energy rating

Eco 16 FX & BFX Model

Eco 16 F Model


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Model Number Designation

ECO 16 ( ) FX

  • 16 = Maximum Head in Feet (adjustable from 4’)

  • B = Pump Housing (Volute) Material

    • (B for Bronze, no Letter for Cast Iron)

  • FX = Pipe Connection

    • F = Flanged

    • FX = Flanged Rotated


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Benefits - External

Fits all Competitors’ Models

(2 Bolt Residential Flanges)

2 Allan Screw Connection

Automatic Air Venting

(Inspection and Service Screw)

Red Button Sets Head (∆pv in feet)

Also Activates/deactivates Setback


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Benefits – Electrical

115/1/60 & 230/1/60 Volt

2 Electrical Openings

Wilo-quick connections


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Sizing Examples

  • Sizing Examples – Simplified Heating

  • Determine BTU’s and Temperature Differential (mostly given)

  • Calc Flow (USGPM) = BTU per hr/500 (constant)/temperature diff deg F

    • EG: 10 USGPM will pump 100,000 BTU/hour @ 20 deg F differential

  • Once flow known size pipe based on max velocity of 4 ft/sec

    • Higher velocities cause noise, erosion and air problems

  • Once pipe sized estimate friction loss

    • Manifold systems heads are not additive – use the highest loss loop

  • Once friction loss and flow are determined match point to curve

  • Remember to use the correct companion flanges

  • Rotate Inventory!


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Installation Instructions

  • Install with shaft horizontal

  • Pump in any direction (vertical, horizontal etc.)

  • If pumping vertical try to pump up (with air)

  • Locate in system where suction pressure as high as possible

  • Pump away from the thermal expansion tank!

  • Fluid should be relatively free of abrasive particles

    • Damages sleeve bearings in wet runners and mechanical seals in dry runners

    • Do not use any stop leak products (see label)

  • Install with terminal box @ 9:00, 12:00 or 3:00 positions

    • Installing @ 6:00 can allow fluid into terminal box during air bleeding

  • Do not install at the highest point (air)

  • Do not install at the lowest point (dirt)

  • Be careful with the suction side (laminar flow)


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Application Examples

  • Applications

  • Cast Iron (Ferrous) Models

  • Primary and Secondary Hot and Chilled Water Systems

  • Up to 50 % Maximum Glycol – DO NOT USE STOP LEAK PRODUCTS!

    • Closed loop (airless) hot and cold circulation systems (60 to 230 deg F)

  • Bronze (non-Ferrous) Models

    • Open loop systems (ie Domestic HW Recirculation) – Max Temp 150 deg F (66 deg C)

    • Higher temps can cause precipitation of Calcium in hard water applications

  • Maximum working pressure 145 PSI

  • Minimum inlet pressure

    • 0.7 PSI @ 122 deg F (50 deg C)

    • 4.4 PSI @ 203 deg F (95 deg C)

    • 14.5 PSI @ 230 deg F (110 deg C)

  • For indoor use only


Eco documentation click data sheet to access pdf file

ECO DocumentationClick Data Sheet to Access PDF file


Cross reference cast iron pumps

Cross Reference: Cast Iron Pumps

New body launched in 2007

Also available in 3 speed version


Cross reference stainless steel and bronze body pump

Cross Reference: Stainless Steel and Bronze Body Pump

Also available in 3 speed version

New body launched in 2007


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Questions / Comments?


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